"The Hills" Girls -- No Tricks, All Treat

10/31/2007 11:41 AM PDT
No chills in these "Hills" -- LC and Audrina opted for sexy over scary for their Halloween costumes this year.

TMZ caught Conrad and Patridge at Les Deux last night for "The Hills" Halloween party, where the two showed up as a sexy-suited sailor and an '80s "Like a Virgin" Madonna.

While Audrina had no problem showing off her costume before hopping into a limo, LC hid in a valet booth as she waited for her car. Ahoy!